Black Diamond GridLock Magnetron Review

The Black Diamond GridLock Magnetron is a belay specific carabiner designed to prevent the possibility of cross-loading when catching a fall. We have seen many wildly different designs that attempt to solve this problem, but unfortunately Black Diamond's is the most annoying to use. Manipulating the belay carabiner repeatedly is an inherent part of belaying while climbing, and since this design makes this a challenging task compared to others, it is not by any means the first one that we would recommend buying.